<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片 -->
    <el-card>
      <!-- 提示 -->
      <el-alert title="添加商品信息" type="info" center show-icon :closable="false"> </el-alert>
      <!-- 步骤条 -->
      <el-steps :space="200" :active="actveIndex - 0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- tab栏 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
      <el-tabs v-model="actveIndex" :tab-position="'left'" :before-leave="beforeTabLeave" @tab-click="tabClick">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_weigh">
              <el-input v-model="addForm.goods_weigh" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader expand-trigger="hover" v-model="addForm.goods_cat" :options="catelist" :props="cateProps" @change="handleChange"></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i"></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action上传地址 -->
            <el-upload
            :action="UplloadURL"
            :on-preview="handlePreview"
            :on-remove="handleRemove"
            list-type="picture" :headers="headerObj" :on-success="handleSuccess">
            <el-button size="small" type="primary">点击上传</el-button>
          </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
          </el-tab-pane>
      </el-tabs>
      </el-form>
      <el-dialog
        title="图片预览"
        :visible.sync="previewVisible"
        width="50%">
        <img :src="previewPath" class="prebviewImg">
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
import _ from 'lodash'

export default {
  data(){
    return{
      actveIndex: '0',
      addForm:{
        goods_name:'',
        goods_price:0,
        goods_weigh:0,
        goods_number:0,
        goods_cat:[],
        // 图片的数组
        pics:[],
        // 商品的详情描述
        goods_introduce:'',
        attrs:[]
      },
      addFormRules:{
        goods_name:[
          {required:true,message:'请输入商品名称',trigger:'blur'}
        ],
        goods_price:[
          {required:true,message:'请输入商品价格',trigger:'blur'},
        ],
        goods_weigh:[
          {required:true,message:'请输入商品重量',trigger:'blur'},
        ],
        goods_number:[
          {required:true,message:'请输入商品数量',trigger:'blur'},
        ],
        goods_cat:[
          {required:true,message:'请输入商品分类',trigger:'blur'},
        ]
      },
      catelist:[],
      cateProps:{
        value:'cat_id',
        label:'cat_name',
        children:'children'
      },
      manyTableData:[],
      onlyTableData:[],
      UplloadURL:'http://127.0.0.1:8888/api/private/v1/upload',
      // 图片上传请求头
      headerObj:{
        Authorization: window.sessionStorage.getItem('token')
      },
      previewPath:'',
      previewVisible:false,

    }
  },
  created(){
    this.getCateList()
  },
  methods: {
    async getCateList(){
      const {data:res} = await this.$http.get('categories')
      if(res.meta.status !== 200) {
        this.$message.error('获取商品列表失败')
      }
      this.catelist = res.data
      console.log(this.catelist);
    },
    handleChange(){
      console.log(this.addForm.goods_cat);
    },
    beforeTabLeave(activeName,oldActiveName){
      console.log('即将离开的标签'+oldActiveName);
      console.log('即将进入的标签'+activeName);
      if(oldActiveName === '0' && this.addForm.goods_cat.length !==3) {
        this.$message.error('请先选择商品分类')
        return false
      }
    },
    async tabClick(){
      // 证明访问的是动态面板
      console.log(this.actveIndex);
      if(this.actveIndex === '1'){
        // console.log('11111');
        const {data:res}= await this.$http.get(`categories/${this.cateId}/attributes`,{
          params:{sel:'many'}
        })
        if(res.meta.status !== 200) {
          return this.$message.error('获取失败')
        }
        console.log(res.data);
         res.data.forEach(item => {
          item.attr_vals.length === 0 ? []
         : item.attr_vals.split(' ')
        })
        this.manyTableData = res.data
      } else if (this.actveIndex === '2') {
        const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
          params:{sel:'only'}
        })
        if(res.meta.status !==200 ){
          return this.$message.error('获取静态属性失败')
        }
        console.log(res.data);
        this.onlyTableData = res.data
      }
    },
    // 预览图片
    handlePreview(file){
      this.previewPath = file.response.data.url
      this.previewVisible = true
    },
    // 移除图片
    handleRemove(file){
      const filePath = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex(x => x.pic === filePath)
      this.addForm.pics.splice(i,1)
      console.log(this.addForm);
    },
    handleSuccess(response){
      console.log(response);
      const picInfo = {pic:response.data.tmp_path}
      this.addForm.pics.push(picInfo)
    },
    add(){
      // console.log(this.addForm);
      this.$refs.addFormRef.validate(async valid => {
        if(!valid) {
          return this.$message.error('请填写需要的表单')
        }
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        this.manyTableData.forEach(item => {
          const newInfo = {attr_id: item.attr_id,attr_vals:item.attr_vals}
          this.addForm.attrs.push(newInfo)
        })
        this.onlyTableData.forEach(item =>{
          const newInfo = {attr_id: item.attr_id,attr_vals:item.attr_vals}
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        
        const {data:res} = await this.$http.post('goods',form)
        console.log(res);
        if(res.meta.status !== 201){
          return this.$message.error('添加失败')
        }
        this.$message.success('添加成功')
        this.$router.push('/goods')
      })
    }
  },
  computed:{
    cateId(){
      if(this.addForm.goods_cat.length === 3){
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style lang="less" scoped>
.prebviewImg {
  width: 100%;
  height: 80%;
}
.btnAdd {
  margin-top: 15px;
}
</style>